mi·cro·or·gan·ism 
(mī′krō-ôrgə-nĭz′əm)
(mī′krō-ôrgə-nĭz′əm)n.
An organism or infectious agent of microscopic or submicroscopic size, especially a bacterium or protozoan.
- chronicle
- chronicle play
- chronicler
- chronic obstructive pulmonary disease
- chronic traumatic encephalopathy
- chronic wasting disease
- chrono-
- chronobiologic
- chronobiological
- chronobiologically
- chronobiologist
- chronobiology
- chronogram
- chronogrammatic
- chronogrammatically
- chronograph
- chronographic
- chronographically
- chronologer
- chronologic
- chronological
- chronological age
- chronologically
- chronologist
- chronology